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An irrigation map that clearly shows the layout of your irrigation system can be very helpful when you need to locate components for repair. Photo: Markus Distelrath/Pixabay

Make a Map of Your Irrigation System

It’s easy (and fun) to produce a landscaping plan showing where every shrub and flower is placed on site. Drawing what you can see is relatively easy.

But what about the irrigation system underneath your landscaping? Do you know the location of your water mainline, irrigation system clocks, valves and sprinkler heads?

Understanding the layout of your irrigation system is important so you can accurately locate components for seamless repair. If you plan on adding to or upgrading the system, you’ll want an irrigation map to guide construction.

Steps to making your irrigation map

First, locate all of the sprinkler heads on your property and mark their location on a copy of your landscaping site plan. Also mark the location of the following elements:

• Water meter or irrigation sub meter, and where the water comes from the street onto your property (the main line)
• Irrigation controller
• Shut off valve for turning off the irrigation system
• Pressure regulator – this may be for the irrigation system separate from the house. If your irrigation comes from a pipe that first serves the house, it may be located before it enters the house.
• Irrigation valves
• Hose bibs
• Backflow preventer – if you don’t have one, your sprinkler valves probably do, so don’t worry

Observe and color code which sprinklers go on at the same time when a valve is turned on.

Adapting your existing irrigation system to a new efficient system

Use your irrigation map to determine which parts will work with a new, more efficient system without abandoning everything and starting from scratch. If you’re removing or renovating most of your landscaping, you might need to alter the irrigation. In that case, starting from scratch can end up being the most cost and time efficient alternative.

This article was inspired by the 71-page Sustainable Landscapes Program guidebook available at The Water Authority and its partners also offer other great resources for landscaping upgrades, including free WaterSmart classes at

5 Takeaways From Newsom’s Revised Budget Plan

Buoyed by California’s strong economy, Gov. Gavin Newsom sent state lawmakers a revised budget on Thursday that boosts his already-hefty January proposal to $213.6 billion. Ka-ching! Public schools will reap most of the gains if the Democratic-controlled Legislature rolls with him. Newsom also upped his ante on the housing crisis with a proposed $1 billion more to combat homelessness. Still, Californians can expect some fiscal debate: Some Democrats want to go further on Medi-Cal spending, and others are leery of Newsom’s tax ideas, such as the sales tax break he wants to give on tampons. And Newsom acknowledged the lessons of past budget exuberance, sounding for all the world like a certain frugal predecessor. Here are five key takeaways: